Mail Archives: cygwin/2017/02/20/13:07:21
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On Feb 17 23:29, Thomas Wolff wrote:
> Am 17.02.2017 um 10:43 schrieb Corinna Vinschen:
> > On Feb 17 08:36, Thomas Wolff wrote:
> > > Am 16.02.2017 um 21:32 schrieb Thomas Wolff:
> > > > Am 16.02.2017 um 13:49 schrieb Corinna Vinschen:
> > > > > There's an ESC sequence to change the codeset? Do you mean the
> > > > > alternate codeset sequence \e[10m / \e[11m
> > > > Oh, that one! Thanks for mentioning, I had overlooked it and fixed
> > > > mintty now to consider it.
> > > > > or is there something more sophisticated?
> > > > I actually meant to adress
> > > > https://github.com/mintty/mintty/wiki/CtrlSeqs#locale and there is
> > > > also \e%G and \e%@.
> > > >=20
> > > > I just notice that later changing of the IUTF8 flag from the master
> > > > side does not seem to work on a Window 10 system (although it works
> > > > initially) while it does work on a Windows 7 system. Weird.
> > > Now tested on 2 Windows 7 systems and 2 Windows 10 systems. Does not
> > > work on Windows 10.
> > > Any idea?
> > Whatever you're observing, there's nothing Windows version-specific
> > here. The tcsetattr function indiscriminately copies the incoming
> > termios structure over. Maybe the bg_check function fails for some
> > reason? Can you strace setting the flag via tcsetattr?
> Attached. There are lots of strace output even without interaction. I've
> tried to isolate the switching moment tightly.
> > There should be some output from tcsetattr as well as from fhandler_ter=
mios::bg_check.
> >=20
> > Can you check?
> You mean the termios_printf trace? How would I activate it (without
> recompiling cygwin)?
Just use the -m option of strace. Have a look into strace --help, it's
explained quite thoroughly.
> 861 40124163 [main] bash 7384 fhandler_pty_slave::tcsetattr: (900): pty=
output_mutex (0x4AC): waiting -1 ms
> 54 40124217 [main] bash 7384 fhandler_pty_slave::tcsetattr: (900): pty=
output_mutex: acquired
> 48 40124265 [main] bash 7384 fhandler_pty_slave::tcsetattr: (902): pty=
output_mutex(0x4AC) released
> 54 40124319 [main] bash 7384 __set_errno: int tcsetattr(int, int, cons=
t termios*):158 setting errno 0
> 58 40124377 [main] bash 7384 tcsetattr: iflag 0x850A, oflag 0x9, cflag=
0xBF, lflag 0xD1F, VMIN 1, VTIME 0
> 58 40124435 [main] bash 7384 tcsetattr: 0 =3D tcsetattr(0, 3, 0x6B1F12=
40)
Ok, so here you're setting iflags & ~IUTF8
> 34 40131547 [main] bash 7384 tcgetattr: iflag 0x850A, oflag 0x9, cflag=
0xBF, lflag 0xD1F, VMIN 1, VTIME 0
confirmed by bash
> 35 40131582 [main] bash 7384 fhandler_pty_slave::tcsetattr: (900): pty=
output_mutex (0x4AC): waiting -1 ms
> 33 40131615 [main] bash 7384 fhandler_pty_slave::tcsetattr: (900): pty=
output_mutex: acquired
> 34 40131649 [main] bash 7384 fhandler_pty_slave::tcsetattr: (902): pty=
output_mutex(0x4AC) released
> 32 40131681 [main] bash 7384 __set_errno: int tcsetattr(int, int, cons=
t termios*):158 setting errno 0
> 33 40131714 [main] bash 7384 tcsetattr: iflag 0x840A, oflag 0x9, cflag=
0xBF, lflag 0xD19, VMIN 1, VTIME 0
> 32 40131746 [main] bash 7384 tcsetattr: 0 =3D tcsetattr(0, 3, 0x6DC0D4)
And then bash sets iflags again, just to the same values as mintty had
set them before.
> 145 43721757 [main] mintty 9348 tcgetattr: iflag 0x840A, oflag 0x9, cfl=
ag 0xBF, lflag 0xD19, VMIN 1, VTIME 0
> 33 43721790 [main] mintty 9348 __set_errno: int tcsetattr(int, int, co=
nst termios*):158 setting errno 88
> 36 43721826 [main] mintty 9348 tcsetattr: iflag 0x2840A, oflag 0x9, cf=
lag 0xBF, lflag 0xD19, VMIN 1, VTIME 0
> 36 43721862 [main] mintty 9348 tcsetattr: 0 =3D tcsetattr(3, 2, 0x66C7=
74)
> 36 43721898 [main] mintty 9348 tcgetattr: iflag 0x2840A, oflag 0x9, cf=
lag 0xBF, lflag 0xD19, VMIN 1, VTIME 0
And now mintty sets iflags | IUTF8. Hmm. Why does it do that here?
It's certainly too late for bash.
I can't see more, but setting and resetting the flag works as expected.
Corinna
--=20
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Maintainer cygwin AT cygwin DOT com
Red Hat
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